Steam-engine



(No Model.) 2 Sheets-Sheet 1.

E. FLAHERTYt STEAM ENGINE.

NO. 467,501. 'Patented Ja,11.26.`18'92.

@WE1/mouw (q1/wanton A2 Sheets-Sheet 2.

(No Modem v v 1 Ef FLAI-IERTY.

STEAM ENGINE.

vTo

. cured drive-rods E".

UNITED STATES PATENT OFFICE.V

EDVARD 'FLAIIERTK OF MAI-IANOY CITY, PENNSYLVANIA.;

STEAM-ENGINE.

`SIEECIFICALION forming part of Letters Patent No. 467,501, dated`January 26, 1892.

Application tile-d May l2, 1891.

To all whom it may concern:

Be it known that I, EDWARD FLAHERTY, a citizen of the United States,residing at Ma hanoy City, in the county of Schuylkill and State ofPennsylvania, have invented certain n ew and useful Improvements inSteam-Engines; and I do hereby declare that the following is a full,clear, and exact description of the invention, which will enable othersskilled in the art to which it appertains to make and use the same.

My invention relates to steam-engines; and it consists of theconstruction and arrangement of the parts hereinafter described, andpointed out in the claims.

The object of my invention is to avoid as much back-pressure aspossiblein fact, to reduce same to such an extent as not to interferewith the accurate working of the piston by an alternate double exhaustworking simultaneously with the ingress of live steam.

In the accompanying drawings, wherein like letters of reference are usedto designate similar parts in the several views, Figure l represents aperspective view of a cylinder embodying` the main features of myinvention. Fig. 2 represents a horizontal central section of saidcylinder. Fig. 3 represents a perspective view of the cylinder andpreferred form of operating connections.

Referring to the drawings, A designates the cylinder, having asteam-chest B of ordinary construction, whose slide-valve is operated bya slide-rod B. On each side of said cylinder at each end is located anexhaust-port C, inclosed by a chambered casing C', having a bottomopening C2. Vithin each of said casings C is mounted a slide-valve D,bearing upon and adapted to slide off the bottoms of said casings andopen or close the openings C2. The said valves D are connected up inpairs by connecting-rods D, to which are se- The openings C2 are l0-cated adjacent to the ends of the cylinder on each side, and the valvesD alternately open and close each pair, thereby providing a siniultaneously-operating double exhaust. The slide-rod B is connected tothe central top portion of an oscillating frame E, and the drive-rods Dare pivotally secured to thev lower ends of side arms E2 of said frame,and consequently as the slide-valve of chest B is Serial No. 392,433.(No model.)

drawn back to admit steam in front of the piston P the openings C2 atthe inner end of the cylinder are uncovered simultaneously to exhaustthe steam behind said piston. 'Vhen said slide-valve is shoved forwardto admit steam behind the piston, the said inner openings C2 are closedand the like openings at the outer end of the cylinder are uncovered toexhaust the steam in front of the piston. The piston-rod P is connectedto a channeled slide F, moving on ways F', carried by a support G, thesaid frame E being also pivotally connected to said support.V

Said slide F .has a link-rod H attached to the rear thereof and at itsopposite end connected to a crankshaft J, which may be the maindriving-shaft, and has thereon an eccentric K, provided with an arm K',secured to the oscillatable frame E.

In View of the construction set forth the piston P operates the slide F,the latter in turn actuates the rod H to revolve the shaft J, and themovement of the eccentric K through its arm K oscillates the frame E.The frame E, as before set forth, controls the movement of theslide-valve of the chest and the valves D in the manner and for thepurpose stated.

It will be observed that the parts are all timed to operate con jointlyand continuously, the one part facilitating and promoting the properaction of the other.

The construction as set forth may be applied in connection with any formof engine, especially the cylinder, with double-valved exhaustconnection, and the rods joining said valves or slides in pairs.

Theother mechanism set forth is more especially adapted for stationaryengines, and in connection with the construction of cylinder, as setforth, provides a positively act-ing and beneficial acquisition to saidform of engine.

It will be understood that the dimensions of the several parts may bevaried at will, and the length of the several strokes, including pistonand connecting and drive rods, will be regulated proportionate to thehorsepower.

Having thus describedmy invention, what I claim as new, and desire tosecure by'Iietters Patent, is-

l. In asteam-engiue, the combination, with IOO a cylinder provided witha steam-chest, exhaust-ports, and with valves for the latter and .thesteam-chest, of an oscillating frame disposed in advance of the cylinderand oonnected at its respective ends with the inlet and exhaust valves,substantially as and for the purpose set forth.

2. In a steam-engine, the combination, With a cylinder provided at itstop with a steamchest and at its sides with exhaust-ports and valves forsaid chest and ports, of an oscillating frame comprising vertical sidemembers and a connecting member and rods connecting the inlet andexhaust valves, respectively, with the transverse member of the frameand with the lower end of the vertical members thereof, substantially asand for the purpose set forth.

3. Inasteam-engine, the co1nbination,with a cylinder provided at its topwith a steamchest and at each side and end with exhaustports and valvesfor said chest and ports, of an approximately inverted-U-shaped framehaving its vertical members journal'ed to standards, rods connecting theex haust-valves with the free ends of said frame, a rod connecting thetransverse portion of the latter with the inlet-valve, and means foroscillating the frame, substantially as and for the purpose set forth.

4. In asteam-engine, the combination, with a cylinder having asteam-chest at its top, provided with a slide-valve, exl1austcasingsprovided upon the exterior of the'cylinder at each side and end, andslide-valves working in said casings and connected up at each side inpairs, of an oscillating frame j ournaled in advance ofthe cylinder andconsisting of two vertical members and a transverse member connectingthe latter near their upper ends, a rod connecting the inletvalvecentrally with the transverse member of the frame, and rods connectingthe exhaust-valves with the lower ends of said vertical members,substantially as and for the purpose set forth.

5. In a steam-engine, the combination, with a cylinder provided with asteam-chest and with exhaust-casngs at each side and end, slide-valvesWorking in said chest and casings, the piston and piston-rod, guidesfol; the latter, and a shaft connected with the pistonrod and providedwith an eccentric, of an oscillating frame comprising two verticalmembers journaled to the piston-rod guides and a transverse memberconnecting the same above the journals, a rod connecting the transversemember with the inlet-valve, rods connecting the lower ends of thevertical members with the exhaust-valves, and an eccentric-rodconnecting the upper end of one of said vertical members with the shaft,substantially as and for the purpose set forth.

In testimony whereof I affix my signature in presence of two Witnesses.

EDWARD FLAHERTY. Witnesses:

JNO. F. DOLPHIN, THOMAS MYERS.

